Heating apparatus



Augo w, 1943. a. GOERG HEATING APPARATUS Filed April 21, 1942 2 Shets-Sheet 1 I I 1 r F 25 l I. 25 h 37 4/ 2/ ll 24 ll 11 1L INVENTOR W I w I v fiI AT RNEY Aug. 10, 1943. B. GOERG 2,326,351

HEATING APPARATUS Filed April 21, 1942 2 Sheets-Sheet 2 Patented Aug. 10, 1943 V HEATING Armsns so Erhard"Gb rgfirfenxville; N: Y}; essigne w Amman Reamer & standard sanitary C61T-- iiomtioii, ew Yfifk, Y., corporation of Delaware Kpbl i'ezitioii A irii'ti, 194 2"; see-e1 Ne. 4393117 3 emits. (01. 110 178) This ifivehfiifiifi relates tofllfn'cS and the like and more fia fieulafly to -fiihiaces; which are prov'i'iiedwith 'foot-ofae'r'ated mechanism for o15enilT'g the "furnace deer, and my inyentionhas for its broad object to provideapparatus of this type which is of iininroyed construction and arrangement ere art's, I H

l A further object is to provide apparatus of the sleeve type which is simple in construction, inexpensive, and highly e'fiecti-ve and dependable in ppe r'ation.

The invention consists in the nevelconstifuet es and combination of parts, to he more fully described hereinafter, and the novelty of which will be fiarticular ly pointed out and distinctly claimed.

Ii'i the accompanying drawings, to be taken as a part of this specification, i have iully and learly illustrated a preferred embodiment. of

my invention, in whih drawings Fig. l is a front elevation of a menac oen- 'st'ruc't'ed'iri accordance with the present inven tion, certain of the parts being broken away to illustrate more clearly the constrfietion andoper-r cation ,of the apparatus} Fig. 2 is e fragmentary vertical section of the apparatu -sewn in Fig.- 1 ahd' is taken on the Iifie 2-'2 of 1,;and showing the relativeposition of the parts whenihe-furnace door is in closed position and the mechanism fer open ing the door in its normal or initial position; 7

Fig. 3 is a view like and shows the rela= ftiv'e position of the parts when the door-opene the door is being opened; 7

Fig. 4 is an enlarged fragmentary plan sec; tion taken on the line 5-4 of Fig. 1; and:

i'rig mechanism is in the position ooeupied when Fig. 5 is a pe'i's'pective View sho ing thereet 1 sites operated 1ever and thedoof-opening pushrod apart froin'the other parts of thefurnaee and" in the relative positions which they occupy when assembled ifith furnace. f. i

For the purppse so f illustration only, I have shown invention embodied ina boiler. furna'c'ef lllof the'w'ell known vertical sectional type. ltwill be appreciatdlas,,th'e description proceerls', that the fiiesefit'ih fention canequally as w n be embqeiedm any other kind gf furnace. The furnace l0 comprises an upwardly extending front wall H, having an aecess opening l2 formed therein and through which the fuelsuohascoal or coke may be snevened into the flirname, The firing openmelz is adapted to b closed by a fire door [3 suitably hinges, as indicatedat l4, along one of its upright sides to the Wall H. The door i tree-deserits other 'u'firig'ht side with the sual atch' n5 whichis adapted to engage ov'ei e hook Iiieiiiber l6. projecting outwardffoiii'tlie Weill H', and thereby l roviding a latch 'for holding the oor closedf A'kri'ob oi" handle I! attached to the door l3 serves-as it means rbr opening. and closing the dOO I" by hand; drawihgsialso sh w alower ash bit.

deer l8 and an upper clean-out door [9.

Iii accordance with the present invention; I ave provided tin-improved orm; (if mechanism; ifidieatd iii general by. the reference character 211', for opi'iifig the firing door 13 by the simple 1 "at' of pressing down on a treadle lever with the gem, and this leaves thehands free to handle the fuel shovel, as is desired when firing. theiurnaoe. The foot-operated mchanisni Zilldmpiises; in gefieral, a treadlelever 21 adapted to be oper-- ated'byth'fwt, and a; push rod 22m'oyed'llpwere andleng 'thwise thefeofbythe lever '21, and

the up'p'e'r end of the rod is so construoted and hositiohed' with respect to the. door as to engage 5 15971 1; oii'the inner side of the 0100: I3 and force the door open upon such upward lengthwise movement of the rod 22. The structure of the leyer 2i and rod 22 tcanbest be seen in Figg- 5 which shows thesepart's in detailperspeotive and in theiraslseinbled relation. The tieadle lever 2! is piyotallysupported; i. 8;.

fuieiuined, etwee itsen d's, andithus comprises a -fifst lei/er arm'2 3 at one side t the-pivot positi'o'ned so thatitlc'anbe pushed downward by the oiiia'tors foot-{and comprises a; second lever.

eerie if at the other} side of thflhivot which is formed at its outer end with an upwardly open ifig socket-.25. The fulcrum or pivetal' sui port fol the treadl'e' lever'zl is proyided by a suitable plfl 2', here shown to be in the form of a 'slieiilder shrew, carried by the front wall I! andextending outwardfrom thewall and in a direce 5 tioi'i abia'roiiiniately normal to the planeofisuch' wan.

' v lower end of therod restswithiri the 'seeket Zia'nd onan upwardly faoing surface,

thereof; The rod 22 extends upward along the red is formed be behind the door ['3' wall H and the upperend of the with an 'integialf outwardly projecting wedge shaped member 211 which is located so thatit will H I when the latter isolhsed', i; e.',- between; the inner side'oj the door l3 and a part'of thepwall H; :The member 21 som prises an inclined or beveledupper surface-28 and downward from'ythe extending eutward wall I I.

Whenthe door [3 is closed;thei rodul'ii in its normal or initial low position, the position shown in Figs. 1 and 2. In this position the inclined upper surface 28 is just below the lower outer edge or face 29 of a flange 30. which is formed on the inner side of said door and at a point spaced horizontally across the door from the hinged side thereof; When'the rod 22 is in initialposition the treadle lever 2| is substanwardtoward open position. Fig. 3 of the drawings shows the lever arm 24..a nd the rod 22as having been moved to their uppermost position and shows the door l3 as unlatched and moving outward about its hinge and in the direction of the arrow toward open position.

The push rod 22 is guided during such up ward lengthwise movementby a suitable pin 34 here shown as a shoulder'screw fixed at one of itsends to the wall H and projecting out- -wardly therefrom and fitting within a slot 35 formed in the rod and extending lengthwise of the latter. The pin 34 and slot 35 permit the rod 22 to slide freely in a lengthwise direction and they thus provide for the return of the rod to its initial lowposition b y its own weight as soon as the operator removes his foot from the lever arm. Downwardmovement of the rod 22 is limited due to the. under side of the outer end of lever arm 24' striking the upper surface of' an inwardly extending ledge 31 forming a part of'the base extension of thewall H. For this purpose; the pivot pin 26 which forms the fulcrum support for the lever 2|, is secured to a base partr38 of the-wall adjacent the ledge Sl and the outer part of the lever arm 24 which carries the socket 25 is set inwardly so that it will overlie andengage the ledge BI and thereby limit downward movement of the'rod, as just explained.

:In the cast-iron boiler furnace'shown, the wall comprises the front of front boiler casting 40 and the front of a cast-iron'bas'e section 4|, .on which the boiler sections rest and are supported The front of the cast-iron base section comprises the base 38 and theledge 31, previously de scribedfand also-comprises an upwardly extending main wallpart or'section 42. It is noted that 'the front face ,of boiler. "section 40 is an upward extension of the main wall. section 42, and therefore may be considered as an up-.

per'part of said section 42; The drawings show the wall section 42 asbeing spaced inwardly 42. The inwardly set socket portion on the end of the lever arm 24 also contributes to the above-described desired location of the rod 22 and to the ease, simplicity, and efficiency with which the force created by the foot of the operator is applied through the rod 22 to the edge .orface. 29 of flange 3il for openingthe door.

Inaddition to the main wall section 42 which constitutes an inner wall part, the front wall {II also comprises an outer wall part provided by a sheet metal jacket 48 spaced outward from the inner wall part to provide a passage 49 therebetween whichextends upward from the ledge 3l'and toatleast the flange 45.

The outer jacket wall 48 is cut away at its bottom to form :an open'ing50 through which the inwardly set outer end of the lever arm 24'extends, and the wall 48 is also providecl'at the upper end of passage 49 with an upper opening 5| through which the wedge-shaped upper end 21 of the rod r 22 extends. Byreasonof this wall construction,

' Patent of the United Statesis'z from the frontface of the base part 38 and the rod'22 as lying closely alongside said section 42 and overlying the ledge 31. The door'opening I2 forms the outer 'end of a horizontal passage 3 44 extending through the frontsection 40. The

outer or forward part of the passage 44, in-

, cluding the opening I2, is defined by a flange 45 shaped substantially as a rectangle and extending forward from the front boilersection 40 and terminating outwardly in a ground vertical face 46 against which the. door l3 engages when closed. Because of the fact" that the face 45 is spaced forwardly of the upwardly extending main wall section 42, it is possible to locate the push rod 22 al0ngside the wall section'and to locate the upper wedge-shaped end 21 thereof between the closed door I3 and the wall sectiononly the treadle lever2| and the extreme bottom end of, the rod 22 are exposed to view when the door 13 is closed. It is noted that the socket member 25 is open at'its rear or inner'side, as indicated at 52. This provides a simple and effective way for operatively connecting the rod 22 and lever 2| 'after the rod is mounted within the wall and with the jacket 43 in place.

From the above, it will be apparent that I have provided a simple and improved form of footoperated mechanism for opening a furnace door. With the exception of the two shoulder screws 25 and 34;the re areonly three parts to the mechanism. One of these parts, the flange 39, is cast integral onl'the furnace door at little, if

any, increased cost, and the other two parts, the

rod 22 and lever 2|, are'simple castings which can be produced at a very low cost. The two shoulder screws 26 and 34 can be of standard size and hence will alsocost very little. It will be'noted from an examination of Fig. 1 that the push rod is slightly inclinedgfrom the vertical. This arrangement permits the location ofthe treadle lever 2| at the side'ofthe ash pit door l8 where it'is easily. accessible to the foot of the operator. As therod 22 is located alongside the main wall-section and within the passage 49, the

rodlies and moves in aplane which is also behind'thexash pit door an'd'hence does not inter fere with the opening and closing of the latter; Consequently, 'therod'22 can be made straight which is' the most efficient form for the purpose of transmitting the force fo r opening the door.

What I claim and desire to secur e by Letters 1. In furnace apparatuaa wall including an upwardly extending basej'a' ledge extending inwardly from the top of saidbase, and a main wall section extending upwardly from theinner edge of the ledge and having 'an opening therethrough; a door closing said opening; a lever pivotally supported on said'wall adjacent said ledge with 'the pivotal axisgarranged'substan tially horizontal and between'the ends of said 7 lever to provide a'first" lever 'arm adapted to be engaged and pressed'down by thefoot of the operator from a normal or initial position; and asecond lever arm including a portion at theouter end thereof overlying and engaging the top of said ledge when in said initialposition;

and apush rod operatively engaging at. its lower end ,an upwardly facing surface on the outer end of said second lever arm and said rod ex-[ tending upward therefrom tosaid door and including an upper portionso formed as to engage a portion of said door and force the-latter open upon an upward lengthwise movement of said rod from said initial position; and cme'anspfor guiding said rod during its upward lengthwise movement and providing for the return of said rod and said lever to initial position due to the weight of said rod when said'first arm is released s by the operator.

2. In a furnace, an upwardly extendingwall having an access opening therethrough; a door 7 closing said opening and being hinged along an upright side thereof to swing outwardly to open position; said .wall including inner and outer wall parts defining a passage. extending upward from a lower part of said wall'to a point located behind said door when the latter is closed, said outer wall part having upper and lower openings adjacent the upper and lower parts of saidpassage, respectively; an upwardly extending push rod engages said surface formed on said door to force said door open; a treadle lever located adacent said lower opening and pivotally supported between its ends to provide a first lever arm positioned to be engaged and pushed downward by the foot of the operator, and a second lever arm extending through said lower opening when. said first armis pushed downward.

' 3. In a furnace,- an upwardly extending wall having an access;opening therethrough; a door v olosingsaid opening andbeing hinged alongan l x upright side'thereof to swing outwardto open position; said wall including inner and outer wallparts defining a passage extending upward from a lower part of said wall to a'point located behind said door'when thelatter is closed, said outer wa'llpart having upper andlower openings adjacent the'upper and lowerpart's of said passage, respeotively; a push rod arrangedlength 7 V wise in said passage and including an upper part 1 extending outward through said upper opening and toward said door, and said upper rod part being so constructed and positioned with respect to said door as to engage the latterand force 7 the door openupon an upward lengthwise'movement of said rod; anda treadle lever at the exterior of said wall adjacent said lower opening and pivotally supported intermediate its ends on said wall to move about an axis projeotingout wardly from said wall and'providing a' first lever arm positioned to be pushed downward bythe foot of the operator, and a second lever arm having a portion at'its end extending laterally through said lower opening and engaging the lower. end of said push rod so as to move the latter upward to. open said door when said first arm ispushed downward; the outer end of said second lever arm being formed as an upwardly and engaging the lower end of said push rod s'o opening socketreceiving said push rod and being also open at the side adjacent said-wall to facili-' tate assembly and removal of the parts.

. BERNARD Gonna.

as to move-theiauer u ward open the djoor 

